At NetSage, we are more than a government contractor—we are a mission-focused partner dedicated to advancing national security through exceptional cyber expertise. We believe our success begins with our people, which is why we invest in and care for our employees. We know that employee retention is mission continuity, and we are committed to building long-term careers where our people can grow alongside our customers' evolving missions. Our employees enjoy meaningful work, competitive compensation, outstanding benefits, and opportunities to expand their skills across multiple mission areas. To learn more about our comprehensive benefits and what it's like to build your career at NetSage, visit our Careers page. Due to the sensitive nature of the work we support, some job descriptions intentionally provide a high-level overview of the role. If you'd like to learn more about a particular opportunity, we encourage you to apply directly or connect with us through our Get In Touch page. We'd be happy to discuss how your experience aligns with our mission and explore where you can make an impact. Job Description: We are seeking a Principal Java Software Engineer to design, develop, and enhance complex software applications supporting data-intensive and mission-critical environments. In this role, you will build scalable Java-based applications and services, integrate distributed technologies, and contribute throughout the software development lifecycle. The ideal candidate for this position will have strong Java and Spring Boot development experience with hands-on knowledge of distributed data systems, containerization, and modern CI/CD practices. Please consider applying if you meet the following qualifications. Required Qualifications: • TS/SCI with polygraph security clearance. • A Bachelor of Science (B.S.) degree in Computer Science or a related field and twelve (12) years of relevant experience. Also acceptable is no degree and sixteen (16) years of relevant experience. • Strong software development experience using Java. • Hands-on experience developing applications and microservices using Spring Boot. • Experience working with MongoDB or comparable database technologies. • Experience developing and deploying containerized applications using Docker. • Experience with message-driven/distributed applications like Apache Kafka and Java Message Service (JMS). • Experience deploying or supporting applications within Kubernetes environments. • Experience with CI/CD pipelines and automated software delivery.